Switch-block and casing.



A. l. FROMAGER & J. F SIX.

SWITCH BLOCK AND CASING.

APPLICATION FILED MAY 10, 1916.

Patented Apr. 24, 1917.

2 SHEETSSHEET 1.

FICf-f [are win w n r/anzp/r Elm/n10 452x rweyd' A. i. FROMAGER & J. F. 804/ SWITCH BLOCK AND CASING.

APPLICATION FILED MAY 10, 1916.

' Patente Apr. 24,191

ZSHEETS-SHEET 2.

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IIIIIIIIIIIIII g 1 \Q UNITED STATES PATENT OFFICE.

ALBERT ISIIDORE FBOMAGER AND JOSEPH FERDINAND SIX, OF MONTREAL, QUEBEC,

' CANADA.

SWITCH-BLOCK AND CASING.

Specification of Letters Patent.

Patented Apr. 24:, 1917.

Application filed May 10, 1916. Serial No. @6328.

ings; and we do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others skilled in the art to' which it appertains to make and use the same.

The present invention relates to improvements in switch blocks and casings such as that shown and de cribed in our copending application filed May iii 3.915, Serial Number 28,197.

The object of the present invention is to provide a switch block of the character aforesaid wherein a more positive contact Will be made between the switch members and the device will be more simple, durable and eiiicient in construction and operation and one which will have less parts, reducing the cost of manufacture thereof and making the article of more commercial value.

A further object of'the invention is to provide a fool-proof casing for switch blocks of this character wherein only authorized persons are permitted to gain access to the interior thereof and a slidable door for the said casing which automatically controls the switch whereby when the said door is opened the switch will be opened and when the door is entirely closed the switch is closed to establish .the circuit.

With the above and other objects in view which will hereinafter appear as the description continues, the invention consists of the novel features of construction and the formation of parts as will be hereinafter more fully described and. particularly pointed out in the appended claims.

In the accompanying drawings is shown a simple and preferred form ofthe invention it being, however, understood that no limitation is necessarily made to the precise structural details herein exhibited but the right is hereby reserved to any changes or alterations that may be made that come within the scope of the invention without departing from the spirit thereof or sacrificin. he etilciency of the same.

:1 3. plan view of t casing having the switch block arranged therein as embodied in the present invention;

Fig. 2 is a similar view with the cover of the casing removed;

Fig. 3 is a side elevation of the switch block;

Fig. i is a vertical longitudinal section taken on the line 33 of Fig. 2 and showing a portion. of the switch block in section;

Fig. is a vertical longitudinal section through the'switch block when the switch is closed;

Fig. 6 block;

Fig. 7 is a vertical transverse section with the fuse plugs removed taken on the line '?'7 of Fig.

is a front elevation of the switch Fig. 8 is a detail end section of the cover;

and,

Fig. 9 is a detail bushings; and,

Fig. 10 is a detail plan View.

.teferring now more particularly to the drawings wherein like and corresponding parts are designated by similar reference characters throughout the several views- The block 1 is of approximately rectangular configuration mad of porcelain or other suitable insulating material. Arranged at one end of the block is a raised portion 2 having a pair of threaded sockets 3 formed plan view of one of the therein in which are adapted to be placed the fuse plugs for a purpose which will be later described. Extending longitudinally through the base portion of the block 1 are a pair of parallel. extending bores each of which having mounted one end thereof a bushing 3 and these bores having mounted in their opposite ones the bushings/4 and the bushings arranged within each bore .re held in spaced relation with each other thereby providing a spaced portion 5 in each bore. Contacting with each of the bushings 4 is a brass screw 6 to which are connected the Wires 7 and through which the current is supplied from the main line to the connections within the fuse block and subsequently carried to the meter. This meter may be in circuit with a lighting system or any other electrical system arranged Within the house to which current is to be supplied. Encircling each of the bushings 3 and held in posi- -tive contact therewith are the rings 8 each having a bushing formed integral there hie conductin ia h to be cones by means oi? an ordinary electri Adapted he Pranged we, sockets are T l-38S b or Emery and well. Known construe; r dahly mounted within each of i is bushings 3 is a rod 16 having their outer bent upwardly and connected to in lted block this constructio" it is obyious' that the flow of current wi pass through the wires 7 into the sleeves and after the switch has been closed the current will pass through wires 13 into the meter indicated by the numeral 38 and from the meter the current passes through the wires 34 to any suitable system.

To hold the rods 16 in positive contact with the bushings 3 we provide leaf springs 18 which are rigidly connected at one end to a sleeve 19 carried by each of the bushings 3 and the opposite or free ends of the leaf springs 18 rest within openings 20'formed within the bushings 8 and press against the rod thereby holding the said rod in positive contact the inner wall of the sleeve 8 From foregoing construction it is also obvious that when the inner ends of the rods 3.6 are within the bushings 3 the circuit will be broken and the inner ends oi. the rods 16 will have to pass through the space 5 within the bores before closing the circuit the circuit will not be closed until the inner ends of the rods l6 engage with the bushings The switch block is adapted to be mounted within a fool-proof cas'ng made of metal or suitable material and is properly insulated therefrom. This casing comprises substa tially a rectangular box 21 having a cover 22 therefor. The switch hiocl: is also detachin the casing by means of the screws 23 as better shown in Fig. 2 so that the block will be held in proper position and prevented movement and the casing may suitably secured in any well known manner to a wall or suitable support. one end connected o iening and clcsinc The door 25 is adapted and the lrnoh 9/3 passes t'wough an elongated slot Q2" formed within the cover 22-, lihis slot 2"? is provided with a transversely extending portion 28 which exposes the fuse plugs to View when the door 25 is opened.

roni the foregoing wili be seenthat when the door is opened the switch will also be opened the circuit broken and the fuse plugslt will be exposed so that should any or" th fuse plugs be burned out new ones may be substituted therefor. Also arranged within the casing 21 is a mon 29 having its lower end adapted to rest within a recess 30 arranged within the block 1. This partition prevents access from being gained to the Wires 7 or peri sitting unauthorized persons from stealing electric current:

The wires *4 extend through a bushing 31 formed within one end of the casing 21 whereas the wires 12 project through the side of the casing Q1 and are hidden from view by means of the casing 32 secured to one side of the casing 21. The wires 84 may extend from the meter or from the casing 32 either at the side of the latter as shown within the drawings or from any end thereof. but the casing 82 incloses the wires 13 and the connection between the same and the meter so as to prevent persons from gaining access to the wires 13 after the door 25 has been closed and the switch closed so as to prevent persons from stealing or otherwise taking the current from the wires 13 before it has passed through-the meter 38. i

The cover 2211215 formed within the depending flange thereof atone end of the cover a pair of spaced openings 35 which are adapted to receive lugs 36 carried by the casing 21 for holding one end of the cover upon the casing 21 and the flange at the opposite end of the cover 22 is provided with an opening through which extends an apertured pro ection 37 to WlllCll a padlock,

derstood that any number of supply leadsmay be used as desired,

Having thus fully described our invention, what we claim as new and desire to secure oy Letters Patent is:

l. in a device of the character described comprising a casing, an insulated block arranged within said casing said block hav ing a pair of spaced longitudinally extendmg bores formed therein, switch terminals arranncd within each of said bores, a or rods shdably mounted within said bores for opening and closing said switch terrninais, an insulated block for connecting one end of said rods, fuse plugs adapted to be connected in circuit with said switch terminals, said casing having an opening therein whereby access may be gained to said fnse plugs, a partition arranged Within said casing to prevent access from being gained to the switch terminals arranged Within one end of said bores, a plate slidebly mounted within said casing, one end of said plate being connected to said. block carried by said rods and means for sliding said plate whereby said rods will cause said switch terminals to be'connected after said plate has completely closed the opening within the casing and disconnected said switch terminals before said plate can be permitted. to open the opening Within the casing, v

2. In a device of the character described comprising an insulated. block, a pair of parallel horizontally extending bores extending through said block, a pair of bushings arranged within each bore and held in spaced relation, s pair of rods slid'ably mounted within said bushings for electrically connecting" the same, one end of said block having enlarged portion formedtherewith, fuse plugs adapted to be arranged Within said enlarged portion, rings encircling the bushings arranged Within one end of said block, means for connecting said rings with said fuse plugs, the last mentioned bushings having cpenings therein, leaf springs carried by said bushings having their free ends adapted to rest Within said openings Wherebores for connecting said switch a block for ointl ccnnectins of: .1 t a said rods, said insul ted block .ng an larged portion, fuse plugs adapted te be ranged Within said enlarged portion adapted to be connected to the switch te nals arranged Within one end of heres, electric connecticns'connected tc the switch terminals arranged within the oppc-site ends of the bores, a partition arranged within casing for preventing access to be geined to the said electrical connections with last mentioned switch terminals, a, detach le cover for said casing having an ope therein, a slidsble plate cennected to-seie; reds and adapted to close said opening, end means whereby When said plate opened the switch terminals will be disconnected and access may be gained to said spark and means whereby after said c nening closed said switch terminals will be 291% nected, substantially as and for the purpose set forth. w

In Witness i'hereof We have hereunto set our hands.

ALBERT ISIDORL FROlvlAGEE IAN?) 

